CGS Seismic Hazards Program: Unevaluated Areas - data.ca.gov Typically, a high seismic hazard zone is nearest a seismic zone where there are more earthquakes, and a lower seismic hazard zone is farther away from a seismic zone. 1Name changed from Special Studies Zones January 1, 1994 California, landslides, earthquake hazards, USA, liquefaction, earthquake hazard identification and mitigation, Seismic Hazard Zone Map Summary -->The map is used by cities and counties to regulate development and by property owners selling property within areas where seismic hazard zones have been identified. Seismic Hazards Maps for the San Francisco Bay Area ... California Earthquake Map - Fault Lines, Zones & Risks by ... Seismic Safety Commission - California A seismic hazard zone describes an area with a particular level of hazard due to . The map predicts the approximate percentage of each designated area that will liquefy and show surface manifestations of liquefaction such as sand boils and ground cracking. CGS Seismic Hazards Program: Landslide Zones - California ... How do I find fault or hazard maps for California? | U.S ... The map does not indicate that this in a liquefaction or earthquake fault zone. A new map released by the California Department of Conservation shows seismic hazard zones across the state, with new information about hazard zones in the Bay Area.. This term should not be confused with Seismic Hazards Analysis. Paper copies of Official Seismic Hazard Zone Maps are available for purchase from: BPS Reprographic Services 945 Bryant Street San Francisco, CA 94103 (415) 495-8700 The Seismic Hazard Zone Report documents the methods and data used to construct the Seismic Hazard Zone Map for each 7.5-minute quadrangle evaluated by CGS. PDF 2014 Implentation of USGS Ca Hazard Map Each unit has been assigned attributes based on intersection with California Geological Survey defined seismic hazard or fault rupture zones. PDF California Geological Survey Zones of Required ... California law requires the seller (if acting without an agent) or the seller's agent to disclose to a prospective transferee of real property if the property is located within a seismic hazard zone (an "SH Zone") provided official maps prepared by the California State Geologist, or the information contained in the maps, is reasonably available". The map displays the boundaries of Zones of Required Investigation for liquefaction and earthquake-induced landslides over an area of approximately 62 square miles at a scale of 1 inch Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and earthquake-induced landslides. Three types of geological hazards, referred to as seismic hazard zones, may be . It even shows liquefaction . Seismic Hazard Zone Maps (California Division of Mines and Geology) Series of maps at a scale of 1:24,000 covering urban areas of California that chart areas prone to liquifaction (failure of water saturated soil) and earthquake-induced landslides . Liquefaction is a phenomenon in which seismic . Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping . CGS Official Maps of Earthquake Fault Zones by quadrangle. Laun ch EQ Za pp. Menu Contact Search The map is searchable by address, and it maps three main hazard zones: Fault zones Landslide zones This hazard map should not be used as a substitute to the State of California Seismic Hazard Zones map for the same area. These hazards include earth shaking (strong motion), fault ruptures, landslides, liquefaction, and tsunamis as well as mineral hazards such as radon, mercury, and asbestos. Interim Revision 2007 . FAULT-RUPTURE HAZARD ZONES . Hazard Zone Map for the Hollywood 7.5-minute Quadrangle, Los Angeles County, California. Field,Value Title,CGS Seismic Hazards Program: Unevaluated Areas URL,cgs-seismic-hazards-program-unevaluated-areas7 Description,"This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. map unit polygons only (no faults, fold axes, or point data). Homeowner's Guide to Earthquake Safety Defined as the losses that are likely to result from exposure to earthquake hazards, seismic risks are determined not only by hazard levels but also by the amount of people and property that are exposed to the . The California Geological Survey, a division within the California Department of Conservation, provides data and analysis of California's seismic and geologic hazards. Defined as the losses that are likely to result from exposure to earthquake hazards, seismic risks are determined not only by hazard levels but also by the amount of people and property that are exposed to the . Service Description: A generalized land unit dataset generalized from a parcel dataset distributed by Digital Map Products (www.digmap.com) and used with permission. California Seismic Hazard Map - Interactive map showing seismic hazard zones, including liquefaction and earthquake-induced landscape zones (created by the California Department of Conservation) Note: The statewide map of seismic hazard has been developed using regional information and is not appropriate for site specific structural design . Also, for the 2009 NEHRP Recommended Seismic Provisions, the 2010 ASCE/SEI 7 Standard, and the 2012 International Building Code: Bay Area seismic maps. The Seismic Hazards Mapping Act (SHMA) of 1990 (California Public Resources Code, Chapter 7.8, Section 2690-2699.6) provides a statewide seismic hazard mapping and technical State of California. The information should The map is intended as a tool for regional planning. Level of Earthquake Hazard Data. Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and . USGS hazard maps, data, and tools for California and other parts of the United States are in the Seismic Hazard Maps and Site-Specific Data section of the Earthquake Hazards Program website. The U.S. Geological Survey released new earthquake hazard maps for the nation on Thursday, boosting the risk of seismic damage up and down the Northern California coast — especially for tall . Seismic Hazard Zone Maps show areas of land that might be prone to landslides, liquefaction or tsunami inundation. Public Resources . Interactive map of California earthquake hazard zones The California Geological Survey's Earthquake Hazards Zone Application (EQ Zapp) is an interactive map that details the risk of earthquakes and related hazards for different areas of the state. Zone 4 is located nearest to active earthquake faults and poses greater hazards than Zone 3. The California Geological Survey (CGS) is dedicated to providing scientific products and services about the state's geology, seismology, and mineral resources that affect the health, safety, and business interests of the people of California. Paper copies of Official Seismic Hazard Zone Maps, released by DMG, which depict zones of required investigation for liquefaction and/or earthquake-induced landslides, are available for purchase from: BPS Reprographic Services 945 Bryant Street San Francisco, California 94105 (415) 512-6550 Seismic Hazard Zone Reports (SHZR) summarize the . Foreign Hazard Maps Includes Afghanistan, Sumatra, State of Gujarat,India. The map displays the boundaries of Zones of Required Investigation for liquefaction and earthquake-induced landslides over an area of approximately 62 square miles at a scale of 1 inch • Seismic Hazard Analysis Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and earthquake-induced landslides. Geologic Map of California Alquist-Priolo Earthquake Fault Zone Maps Earthquake Hazards Zone Application (EQ Zapp) Landslide Maps Watershed Maps These maps may be used to evaluate the relative risk within a region or to determine if a geotechnical report is required for development or building permits. Stanford Libraries' official online search tool for books, media, journals, databases, government documents and more. California has two shaking zones 4 and 3. loss of life and property by identifying and mitigating seismic hazards. Any site-specific planning or analysis should be undertaken with the assistance of a qualified geotechnical engineer. The dataset is comprised of polygons that form regulatory zone boundaries (Alquist-Priolo Earthquake Fault Zones). It's an interactive map that shows earthquake fault zones and seismic hazard zones in relation to any parcel in California. To access USGS earthquake information without using javascript, use our Magnitude 2.5+ Earthquakes, Past Day ATOM Feed or our other earthquake feeds . The California Earthquake Hazards Zone Application (EQ Zapp). 6) USGS base map standards provide that 90 percent of cultural features be located within 40 feet (horizontal accuracy) at the scale of this map. Three types of geological hazards, referred to as seismic hazard zones, may be . Seismic Safety Commission provides a variety of information sources on its website, including the Homeowner's Guide to Seismic Safety. In addition to the Seismic Hazard Zone Map, the Landslide Inventory layer is also being published as part of CGS's Landslide Inventory Map Series. The Seismic Hazards Mapping Act (Act) of 1990 (Public Resources Code, Chapter 7.8, Section 2690-2699.6) directs the Department of Conservation to identify and map areas prone to earthquake hazards of liquefaction, earthquake-induced landslides and amplified ground shaking. This map shows 100 Year Flood Zone - Flood Zone Data. California Geological Survey Maps Earthquake Shaking Potentia . Any site-specific planning or analysis should be undertaken with the assistance of a qualified geotechnical engineer. The San Diego Seismic Safety Study is a series of maps that indicate the likely geologic hazards throughout the city. See Figure 7 on page 7 of the Homeowner's Guide. Dam Failure Inundation Map. The maps also contribute to the California Geological Survey's Seismic Hazard Zone maps. This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. 38.465074, -122.723705. Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and earthquake-induced landslides. Legend. The map displays the boundaries of Zones of Required Investigation for liquefaction and earthquake-induced landslides over an area of approximately 62 square miles at a scale of 1 inch The purpose of the Act is to reduce the threat to . With EQ Zapp, you can type in an address or use the location capability of your computer . The map is intended as a tool for regional planning. Bay Area seismic maps. The first is a new map of the young geologic deposits in the low-lying sections of the Bay Area. Service Description: This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. Paper copies of Official Seismic Hazard Zone Maps, released by DMG, which depict zones of required investigation for liquefaction and/or earthquake-induced landslides, are available for purchase from: BPS Reprographic Services 945 Bryant Street San Francisco, California 94105 (415) 512-6550 Seismic Hazard Zone Reports (SHZR) summarize the . Association of Bay Area Governments offers shaking maps, liquefaction maps, predictive transportation disruption maps, and more. The Seismic Hazards Mapping Act requires the state to prepare maps of the zones in California most susceptible to landslide and liquefaction hazards during earthquakes. Hazard Zone Map for the Hollywood 7.5-minute Quadrangle, Los Angeles County, California. A number of different earthquakes are possible in the Bay Area. Hazard Zone Map for the Beverly Hills 7.5-minute Quadrangle, Los Angeles County, California. one or more state-mapped hazard areas, including a Seismic Hazard Zone. In addition, a fourth feature may be included representing areas not evaluated for liquefaction or earthquake-induced landslides. Javascript must be enabled to view our earthquake maps. This zone is capable of generating an earthquake of a magnitude 9 or larger, occurring—on average—once every 500 years. However, the quality of data used is varied. An online map of faults that includes California is in the Faults section of the Earthquake Hazards Program website. Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and earthquake-induced landslides. CA 95403. the property that is being sold lies within one or more State-mapped hazard areas, including Earthquake Fault Zones. A seismic zone is used to describe an area where earthquakes tend to focus; for example, the New Madrid Seismic Zone in the Central United States. The identification and location of liquefaction and earthquake-induced landslide zones are based on available data. California, landslides, earthquake hazards, USA, liquefaction, earthquake hazard identification and mitigation, Seismic Hazard Zone Map Summary -->The map is used by cities and counties to regulate development and by property owners selling property within areas where seismic hazard zones have been identified. Disclaimer: These maps are based on the most current information available to San Joaquin County Community Development Geographic Information Systems at the time of publication. This map can be used later in compilation of a new geologic map of the area. Most residents of the Bay Area live and work in these low-lying areas that are underlain by these young deposits. The Geologic Hazard Zone includes areas in close proximity to active faults, which are defined by the California Geological Survey as mandated through the 1972 Alquist-Priolo Earthquake Fault Zoning Act.The intent of the Act is to prevent the construction of buildings used for human occupancy where an active fault intersects the ground surface. SPECIAL PUBLICATION 42 . Earthquake Shaking Potential Map. . See also Global Earthquake Model (GEM). This data set contains the Alquist-Priolo Earthquake Fault Zones as shown on the Official Alquist-Priolo Earthquake Fault Zones Maps. SHMA Caltrans is currently using the 2008 USGS California Hazard Map for determining ground shaking . Although you may hear the terms "seismic zone" and "seismic hazard zone" used interchangeably, they really describe two slightly different things. These maps do not furnish site specific information and should be used only as a guide when evaluating The California Geological Survey prepares seismic hazard zone maps and provides them to local governments; these maps identify areas susceptible to amplified shaking, liquefaction, earthquake -induced landslides, and other ground failures. This map shows the liquefaction hazard in the communities of Alameda, Berkeley, Emeryville, Oakland, and Piedmont for a magnitude 7.1 earthquake on the Hayward fault. Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and . This map shows Earthquake Shaking Potential Map. Request PDF | On Apr 4, 2019, Maxime Mareschal and others published SEISMIC HAZARD ZONE REPORT FOR THE MONTARA MOUNTAIN 7.5-MINUTE QUADRANGLE, SAN MATEO COUNTY, CALIFORNIA 2019 DEPARTMENT OF . Paper copies of Official Seismic Hazard Zone Maps, released by CGS, which depict zones of required investigation for liquefaction and/or earthquake-induced landslides, are available for purchase from: BPS Reprographic Services 945 Bryant Street San Francisco, California 94105 (415) 512-6550 Seismic Hazard Zone Reports (SHZR) summarize the . Skip to Main Content. The Seismic Hazards Mapping Act (SHMA) of 1990 (Public Resources Code, Chapter 7.8, Section 2690-2699.6) directs the Department of Conservation, California Geological Survey to identify and map areas prone to earthquake hazards of liquefaction, earthquake-induced landslides and amplified ground shaking. In 1880 the California Legistlature established the State Mining Bureau which has evolved during its 127 years of continuous service into the modern California Geological Survey (CGS). There are two maps for each county that establish zones where there is a significant likelihood of earthquake-induced landslides and soil liquefaction as a result of strong shaking. Urban Seismic Hazards Includes California, Central and Eastern U.S., Pacific Northwest hazard maps and data. Service Description: This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. Regulatory Zones: Alquist-Priolo and Seismic Hazard zones require that additional study be conducted . Introduction Earthquake-induced landslide hazard maps are prepared by the California Geological Survey (CGS) using a GIS that allows the overlaying of various data layers. , they are used by cities and of the Homeowner & # ;. Included representing areas not evaluated for liquefaction or earthquake Fault Zones by quadrangle stand-alone Maps that underlain... 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